Hydrocaps for IBE cells [RE-wrenches]

[Kurt Albershardt]

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Does it have to be carbon block, or would GAC work?  I wonder if we could design a refillable cap with similar properties?




--On Monday, February 23, 2004 10:57 AM -0500 "Tom Lane, Energy Conservation Services" <tom at ecs-solar.com> wrote:

> What is a HydroCap?? All it is - is 2 pieces of carbon with a platinum
> screen glued between the 2 pieces of carbon or sandwiched between the carbon
> blocks is the platinum screen.  Anybody who barbeques with charcoal
> briquettes can easily understand what happens to the carbon block over time
> or during an intensive equalization from an inverter.  You can turn a carbon
> block to charcoal dust in a HydroCap easily with an equalization charge.
> Over time it will turn to charcoal dust anyway.  Break one open and you will
> see what I am talking about- this is no mystery as to what is in a HydroCap.
>
> Gator Tom
>
> ----- Original Message -----
> From: "Matt Tritt" <solarone at charter.net>
> To: <RE-wrenches at topica.com>
> Sent: Saturday, February 21, 2004 12:46 PM
> Subject: RE: Hydrocaps for IBE cells [RE-wrenches]
>
>
>> Dana,
>>
>> You might experiment with a small batch of Water Misers and see how they
>> perform, but it seems to me that the best solution is with a good
>> re-watering system. There's been plenty said about the problems
>> associated with auto waterers on this list but, regardless of whatever
>> they may be, at least they don't care about voltage levels, temperatures
>> and they don't melt!
>>
>> Matt T
>>
>> -----Original Message-----
>> From: Dana Orzel [mailto:dana at solarwork.com]
>> Sent: Saturday, February 21, 2004 6:50 AM
>> To: RE-wrenches at topica.com
>> Subject: Hydrocaps for IBE cells [RE-wrenches]
>>
>>
>> My .02 -  I quit selling "Hydro caps" years ago after getting in a
>> conversation with the manufacturer [I think from Florida?] where he was
>> telling me that 28.8 volts and higher [29.4VDC for unheated battery
>> packs in winter] voltages were outside the design of their product and
>> of course they would fail and melt. We were to be "charging to 26.8 to
>> 27.2 VDC and holding at these float voltages till the battery was full."
>> We went round and round and I gave up trying to convince him that we
>> needed to get to higher voltages. I regularly run into melted down sets
>> have removed so many sets of melted Hydrocaps since that conversation
>> that I have not purchased or specified them in years. Great idea but
>> longevity & quality seems to be poor.
>>
>> Are there long life-high quality rewatering caps that are approved for
>> higher voltages these days? Will they handle 31VDC for an equalizations?
>> Or do they need to be removed? [messy and a problem with
>> auto-equalizations functions]
>>
>> Dana Orzel
>>
>>
>> Responsible Technologies for Responsible People.
>> Great Solar Works, Inc.
>> dana at solarwork.com - 970.626.5253
>> Ridgway, CO, USA
>>
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>
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